Master Flow ERV4 Power Attic Vent with Thermostat, 480 sq-in Net Free Ventilating Area, 1000 cfm Air, Steel dust collection The redesigned head guard of

The redesigned head guard of the NR90AE(S1) framing nailer allows for a faster and easier disassembly process

Includes a stainless steel stop collar for precision depth

Abrasion resistant outer cover

tilt wall braces

Master Flow ERV4 Power Attic Vent with Thermostat, 480 sq-in Net Free Ventilating Area, 1000 cfm Air, Steel dust collection The redesigned head guard ofPre wired roof mount attic vent and thermostat control, helps exhaust large amounts of hot and humid air from your attic, helps protect your roofing system and promotes your home's energy efficiency, energy efficient PSC (permanent split capacitor), includes internal heavy duty screen which helps prevent animal infestation.